253420765 has 32 divisors (see below), whose sum is σ = 347195520. Its totient is φ = 176027904.

The previous prime is 253420747. The next prime is 253420771. The reversal of 253420765 is 567024352.

It is not a de Polignac number, because 253420765 - 2¹³ = 253412573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253420765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193242 + ... + 194548.

It is an arithmetic number, because the mean of its divisors is an integer number (10849860).

Almost surely, 2^253420765 is an apocalyptic number.

It is an amenable number.

253420765 is a deficient number, since it is larger than the sum of its proper divisors (93774755).

253420765 is a wasteful number, since it uses less digits than its factorization.

253420765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 253420765 is about 15919.1948602937. The cubic root of 253420765 is about 632.8207812136.

The spelling of 253420765 in words is "two hundred fifty-three million, four hundred twenty thousand, seven hundred sixty-five".